Injector for oil engines



E. LA'UBLI INJECTR FOR @1L ENGINEs Now. 11 924- Filed July 18. 1923 /Z l ll Wl T ESSES Patented Nov. 11, 1924.

TESk

PATE 'y FFICE.

ERNEST LAEUBLI, 0F MILWAUKEE, WISCONSIN.

INJECTOR FOR OIL ENGINES.

Application filed July 18, 1923. Serial No. 652,459.

To all whom t may concern.'

Be it known that I, ERNEST LAEUBLI, a citizen of Switzerland, and a resident of Milwaukee, in the county of Milwaukee and State of l/Visconsin, have invented a new Kand Improved Injector for Oil Engines, of which the following is a full, clear, and

exact description.

y the heavy oil-burning type.

The present invention relates to new and useful improvements in internal combustion motors, and it pertains more particularly to oil-burning motors commonly known as Diesel or semi-Diesel type.

It is one of the primary objects of the invention to provide a new and improvedform of nozzle for internal combustion motors of It is a further object of the invention to provide a new and improved form of combustion chamber for motors of this type.

.It is a further objectV of the invention to y provide a nozzle which will permit of the use of fuel oil of the lowest grade in motors of either the two-cycle or four-cycle internal combustion type.

It is a further object of the invention to provide a nozzle for motors of the aforementioned type inwhich a complete con# sumption of the fuel oil is had and a resultant complete combustion is obtained.

vlt is a further object of the invention to construct the nozzle in such a manner that the oil injected thereby ignites' immediately after leaving the nozzle to provide primary ignition, said nozzle storing heat for the purpose of promoting the secondary ignition.

With the above and other objects in view, reference is had to the accompanying draw ings, in which AFigure 1 is a detail sectional view of the upper portion of an internal combustion motor cylinder constructed in accordance with the present invention and showing the induction nozzle in position therein;

Fig. 2 is an enlarged detail sectional view showing the nozzle in longitudinal section;

Fig. 3 is abottom plan view of the nozzle shown in Figs. 1 and 2;

Fig. 4 is a detail view of the nozzle per se, said nozzle being shown both in plan and in section in this ligure;

Fig. 5 is a detail sectional view of a slightly modified form of nozzle;v

Fig. 6 is a plan view of th-at form of nozzle shown in section in Fig. 5;

Fig. 7 is a plan view of a still modified form of the invention.

Referring to the drawings and more particularly to Figs. 1 to 4, inclusive, the reference character 10 designates the motor cylin der, andll designates the head thereof, the piston of the motor being designated by the reference character 12. rIhe motor headf11 is formed with a globe-shaped chamber 13, and leading from the chamber through the top wall of the head, there is a passage 14, which is adapted to receive an inductor or nozzle15. f l,

Referring to Fig. 2, it will be seen that the nozzle comprises a body portion 16, of a diameter substantially equal to the diameter of the passage 14 heretofore mentioned. Thisbody portion 16 is provided with a flange 17, which is adapted to engage the top face of the head 11 of the motor cylinder, when the body portion 16 of the nozzle is inserted in the passage 14. The body of the nozzle is adapted to be secured in position on the head of the cylinder by a plate, 18, or the like, and said platewis in turnsecured to the head of the vcylinder by cap screws, bolts, or the like, 19.

Extending longitudinally through the body 16 of the nozzle, is a passage 20, and communicating with said passage 20 and leading into the outer end of the body portion 16 of the nozzle is a fuel pipe 21, which fuel pipe is adapted to be connectedto a high pressure oil pump which serves to force the oil through the nozzle 15. The inner end of the body portion 16 of the nozzle is provided with a screw-threaded recess 22, and having threaded engagementy with the screw-threaded recess 22, is a hood member 23. This hood member 23 is cylindrical in form and is provided in its side walls with a plurality of openings 24, preferably circular in form. In the preferred form of the invention the lower end of the` hood member is provided with an elongated slot or passage 25, more clearly shown in Fig. 3.

The body portion 16 of thef nozzle is. prof vided within the screw-threaded recess 22 with an internally screw-threaded projecting port-ion 26, and havingthreaded engages ment with the screw-threaded projecting port-ion 26, there is a cap or shell27 which serves to retain the nozzle member 28 in position upon the screw-threaded,.extremity 26. Interposed between the end of the screwthreaded. member 26 and the cap member 27, there is a gasket 29. 4

1 ReferringtoFig. 4,.it will be noted that the..nozzlemeniber .28 is formed .with la flange 30 and a projecting` portion 31. This nozzle memberiis also provided with a recess 32, in whiclrtheigasket.29 .heretofore mentioned,.isadapted to seat, and a chamber 33 isalso formed in the nozzle member 3). Leadin-g..from the' chamberi33, through the body portion 31 of the nozzle, is a plurality of pas,- sages 34,.preferably arranged .in a straight lin,-.-as more clearly shown in the plan view of Fig.. 4. ,These passages34 `are so. arranged t-h'fatasthe oil is projected therethrough, a spray..will beformed .and the dimension of saidspray willbe equal to the. longitudinal dimensioniof `the elongated slot 25. in the hood ,member 23.1. VBy this construction it is apparent...thatqthenspray. of fluid oil will pass.. through the elongated slot 25.`

Positioned upon the lower end of the hood member..23, the're is a plate 23,.securedby rivets .or.tlie|.like 24. Passing Longitudinallythroughthenbody portion; 16k of the liozzleg1there isaset screw, or. the like, 35, andfsaid SetV screw is `adaptedto engage the threaded portionof the hood 23 to maintain the. same, in-adjustment by preventing rotationsthereof relative to the body 16 of the nozzle 15.... 1

The... device operates in the following mannerpw.

.The fuel oil, isconveyed to the `nozzle by means of thepipe 21, which, as heretofore stated, is connected to a suitable pressure j )umpi As .the sprayenters the .hood 23, the outside .particles ignite. immediately after leaving the. nozzle. by coming in contact with the. .high temperature within my .apparat-us, cansingprimary ignition. By passing the opening in cover all other oil particles will be ignited by touching the hot edges ofsaid openingandcause thel secondary ignition andra. complete combustion of the fuel within the. globe-shaped combustion kchamber 13 and...furnish the working pressure on the piston.

ln that form of the invention shown in Figs. 5 and 6, the hood 23 is formed with a centrally disposed circular opening 40 in its bottom wall in lieu of the elongated slot 25 employed in the preferred form of the invention. This circular opening is reinforced by a flange 41, and the openings 24 are likewise reinforced by a flange 45. This flange 45, ,while not shown in 1the preferred form of the invention, is intended to be used in connection. .with the preferred form since it lends strlengtlrto the, body of the hood at the openings 24. The' nozzle member in the form oftheJi-,nvention shown in Figs. 5 and 6 is yprovided with a plurality of openings 46, which,openingsjare arranged in a square rather than in a straight line as described in the preferred formof. the invention,..and these openings are so positioned with respect to eachotheri and withVV respect to the .open. ing 40 in the.hood,23,.tha.t the spray..emitted by the openings .will pass through the open.- ing.40, as shown by the dot-and-dash lines lll 5i i i..

In that form of the invent-ionshown `in Fig. 7,; the hood 23 viszformedin.itslioftom wall 450 with a.plurality,ofcircular .open-y ings 51, each of which isboundedby aang'e 52, which formsL a; reinforcelnentztherefor. As shown in dotted lines.in tliis.iigure,.tli nozzle has openings54 in tlie Sametrelative position as tlie openings46 v.inw .theform showin in Fig. 6. In the Yform;shown.inlig 7, the fuel oil is ejected ythrough the-,openings 54 and passthrough the openingsl, inlieu of. an elongated slot..25,' r,..a single Opening 40, .as showun .FigsnB .and and, 6, .respectively.;` In .the modified. forni of the ...invention the. .operation is.. the same, las; that. ,de scribed .in thepreferredform .of .the inverttion, and, therefore, is not repeated at this time. im; ...Fromthe foregonglit isapparent that the present... .invention .providesa a new and improved, .type of injecting. .nozzle...for. -oil engines. of ,the Diesel .or. semi-Diesel type, andthat. by use ofthe improved.nozzleespe: ciallyin combination. with. ,a ,globe-shaped combustion chamber, a complete combustion of .thefuel is had. i

What is .claimed is.: l.. .1. 1. .An injector ..for '.,internalicombustion motors, comprising a body portion .formed on its inner end with a circumferential ,Clanv nel providing `aninternally ,screivftliided recess and .an exteriorly.. screw-threaded. pro: jecting nipple, a perforated washer adapted for engagelnentavith theend of thezntippld a cap having threaded engagementwithsaid nipple and serving to secure theWasherin place in engagement therewith, anda. hood member adapted .to enclose. the nipple and thel capsaid hood member having removable threaded engagement... with the interiorly screw-threaded recess.

Q. An injector for internal combustion motors, comprising a body portion formed on its inner end With a circumferential channel providing an internally screw-threaded recess and an exteriorly screw-threaded projecting nipple, a perforated Washer adapted for engagement With the end of the nipple, a cap having threaded engagement With said nipple and serving to secure the Washer in place in engagement therewith, and a hood 10 member adapted to enclose the nipple and the cap, said hood member having openings therein in alnement with the perforations in said perforated Washer.

ERNEST LAEUBLI. 

